Just one more quick point about that new poll casting doubt on whether efforts to tar Elizabeth Warren with Occupy Wall Street are working.

A few weeks ago, the Rove-founded Crossroads GPS spent six figures on an ad that was all about Occupy Wall Street, falsely insinuating that Warren supports protesters’ violence and slamming the protests for advocating “radical redistribution of wealth.”

Today, with Warren edging into a lead over Scott Brown, Crossroads GPS is out with a new spot that doesn’t mention Occupy Wall Street at all, and actually tars Warren as too cozy with the big banks at the expense of the middle class:

The ad’s premise is absurd on its face. It argues that Warren’s claim to being a defender of the middle class is questionable, because “Congress had Warren oversee how your tax dollars were spent, bailing out the same banks that helped cause the financial meltdown.” That’s a reference to the Troubled Asset Relief Program.

Of course, what really happened was that the Senate Democratic leadership appointed Warren to an oversight role over TARP.

The ad also alleges — as a negative — that Warren went on a “charm offensive” with Wall Street fat cats. That’s a reference to a Politico article on a U.S. Chamber of Commerce event, where Warren sought common ground with top business figures at a moment when they were furious with her.

But put aside all this obvious absurdity. The real key here is that Crossroads went from attacking Warren as too close to Occupy Wall Street, to attacking her as too helpful to, and too cozy with, the big banks.

What does that tell you about who’s winning the argument?